338 Forestry Quarterly. 



As an example of the yield in timber and money, omitting 

 the Wiirttemberg Practice as not one of natural regeneration, 

 the following figures for the Murg Schifferschafts Wald, owned 

 by a Ehitch Corporation will serve: 



Silvicultural Systems: Shelterwood, Border Cutting and Se- 

 lection. Cut per acre per annum: 153 feet, board measure, 



Increment per acre per annum : 170 to 204 feet board measure.* 



Gross revenue per acre per annum: $15,625. 



Gross expenses per acre per annum: $3,125. 



Net revenue per acre per annum: $12.50. 



From these figures it appears that only 20% of the gross 

 revenue goes for expenses — i. e. maintenance of roads, silviculture, 

 and the like. This is an unusually low figure accounted for 

 largely by the corporate ownership of the forest. Similarly the 

 net revenue of $12.50 per acre per annum is higher than almost 

 anything except the Sihlwald near Zurich in Switzerland, f 



The application of the foregoing to American conditions is 

 closer than is usually the case with the intensive methods of 

 European forestry. First, because, with the exception of 

 Wiirttemberg, regeneration in the Black Forest depends almost 

 entirely on natural means. Artificial restocking is resorted to 

 only after natural methods have failed of success i.e. on certain, 

 inevitable fail places, or on the extensive areas of windfall. The 

 methods used in natural regeneration are almost identically those 

 in common use in America (except the Border Cuttings whose 

 trial in America is strongly to be recommended. 



But American silviculture is too recent to show the progress 

 of natural regeneration under the forester's directing axe. The 

 parallel is also close in that thinnings play a less important role 

 in the Black Forest than is usual in Europe, being confined mostly 

 to the removal of suppressed and diseased individuals (chiefly 

 cancerous firs.) 



Secondly, the lessons of the Black Forest are of importance 

 to American foresters because sixty years ago this too was an 



* This increment according to the Oberforster continues even after 30% 

 of the stand has been removed in reproduction cuttings. The official figures 

 give the increment as 1,27 feet board measure per acre per annum. 



tThis Forest has now passed into State control. 



